#include <stdio.h>
int main()
#define b w/((h/100)*(h/100))
{
    float w, h = 0;
    while (~scanf("%f %f", &w, &h))
    {
        if (b < 18.5)
            printf("Underweight\n");
        else if (b >= 18.5 && b <= 23.9)
            printf("Normal\n");
        else if (b > 27.9)
            printf("Obese\n");
        else
            printf("Overweight\n");
    }
    return 0;
}
